Suggested by General Electric in a 1970 document, this circuit uses a LASCR, or SCR fired by light. This component is uncommon today.
This circuit with TTL output was found in a 1968 EEE. The transistor can be of general use. The...
This circuit for controlling high power LEDs (up to 2A) is from a General Electric documentation from...
This very simple circuit was found in a 1977 documentation. The L1 coil has 3 turns of AWG wire 22 to...